Drum.



j. E. WINNE.

DRUM.

APPLICATION FILED MAY 23. IQIs.

Patented Nov. 12, 1918.

7 2 SHEETS-SHED I.

1. EQ WINNE.

DRUM.

APPLICATION HLED MAY 23 1918* Patented Nov. 12, 1918.

2 SHEETS-SHEET 2.

UNTED STATES PATENT OFFICE.

JOHN E. WINNE, 0F TROY, NEW YORK, ASSIGNOR OF ONE-HALF TO FREDERICK C.CLAESSENS, OF TROY, NEW YORK.

DRUM.

Patented Nov. 12, 1918.

Application filed May 23, 1918. Serial No. 236,219.

To all whom t may concern:

Be it known that I, JOHN E. WINNE, a citizen of the United States,residing at Troy, county or Rensselaer, and State of New York, haveinvented certain new and useful Improvements in Drums, of which thefollowing is a specification.

Reference may be had to the accompanying drawings, and the referencecharacters marked thereon, which form a part of this specification.Similar lcharacters refer to similar parts in the several figurestherein.

The principal obj ect of the invention is to facilitate the mounting andadjustment of the head of a drum or like instrument.

Other objects will appear in connection with the following description.

Figure 1 of the drawings is a view in side elevation of a drum made inaccordance with my invention.

Fig. 2 is an end view of the same.

Fig. 8 is a view in perspective of the iieshhoop with the head clampedthereupon.

Fig. 4 is a cross-section of the same taken on the broken line 4 4, inFig. 3.

Fig. 5 is a view in perspective of the camsegments for stretching thedrum-head.

Fig. 6 is a view in side elevation of a broken-away portion of thedrum-barrel, showing the guide-strap for the ends of the cam-segmentswhich are not connected together by screw-mechanism.

Fig. 7 is a horizontal section of the same taken on the broken line 7 7in Fig. 6.

Fig. 8 is a view in perspective of a brokenaway portion of the drum,showing the button-mechanism for locking one of the stretching-hasps tothe drum-barrel.

Fig. 9 is a vertical cross-section on the broken line 9 9 in Fig. 1.

Referring to the drawings wherein the invention is shown in preferredform, 1 is a drum-barrel, which may be made of wood or metal.

At each end the drum isv provided with head, 2, and with means forstretching the head over the end of the barrel. As thisstretching-mechanism is the same for each end of the drum, a singledescription will suiice for both.

The end of the barrel is preferably reinforced by an inner hoop, 3, asshown in Fig. 9.

are preferably rectangular in cross-section,

so that when the divided ring, 6 is contracted within the groove, 5, theedge-por tion of the head will be securely clamped upon the flesh-hoop.

The ends of the divided clamping-ring, (i, have outwardly projectinglugs, 7, which are adjustably connected together by a screw, 8, wherebythe ring can be contracted to tightly it within the groove, 5, in theflesh-hoop, and thereby to securely clamp the edge-portion of the headupon the fleshhoop.

The flesh-hoop is adapted to t over the i outside of the end of thedrum-barrel, 1, so

that when the flesh-hoop is drawn inwardly along the barrel the head, 2,will be stretched over the inner hoop, 3.

T he end of the drum terminates in a counter-hoop which may be formed ofany suitable material, but which I have shown as preferably formed of awooden hoop, 9, superimposed upon and coincident with the flesh-hoop, 4,and a metal-band, 10, inclosing the wooden hoop, 9, and extendinginwardly to substantially lap the flesh-hoop, 4.

The metal-band, 10, of the counter-hoop is cut-away or notched at 11, toreceive and permit access to the screw-connection, 8, be-

tween the ends of the divided head-clamping ring, 6, as shown in Fig. 1.

Pivotally mounted upon the counter-hoop are a plurality of hasps, 12,each adapted to swing downwardly or inwardly parallel with the barrel ofthe drum.

Pivotally mounted upon the barrel,.1, are

a like plurality of buttons, 13, with flattened headsA adapted whenturned parallel with the aXis of the drum to pass freely through the yrespective slots, 14, in the hasps, and when turned at right angles fromsuch position to lock the hasp to the drum-barrel.

Mounted upon the inner end of each hasp,

l2, is a cam-follower preferably in the form of a roller, 15, locatedbetween the hasp and the barrel of the drum.

Mounted between the hasp and the barrel of the drum and between therespective buttons, 13, and rollers, 15, are a pair of cam-segments, 16,having cams or wedgeshaped portions, 17, adapted to engage therespective rollers, 15.

On one side of the drum these cam-segments are connected together by aturnbuckle or rightand-lett-hand-threaded screw, 18, whereby saidsegments may be drawn together in ya direction to cause the higher partsof the cam surfaces, 17, to engage the respective rollers, 15.

The Shanks of the buttons, 13, engage the outer side of the respect-ivecam-segments, 16, preventing any yielding outward movement ot' thecam-segments, and holding the respective cams to their work.

The other ends of the cam-segments on the other side of the drum areleft free 'for a movement of separation, but are guided and held closeto the barrel oi' the drum by means of a strap, 19, riveted to thebarrel of the drum, as shown in Figs. 6 and 7.

The several rollers, 15, are preferably made truste-conical .with theirend of larger diameter adjacent to the barrel of the drum, and thecam-segments, 16, are preferably chamfered on the inner side of therespective cams to make a dove-tailed engagement with the respectivetruste-conical rollers.

l'lheshank of each button, 13, is preferably formed with a lateral lug,extending parallel with the head ont the button and adapted when thebutton is in locked position to extend, and substantially i'ill thespace, between the hasp and the barrel of the drum, leaving between saidlug and the head of the button a comparatively narrow slot adapted forclose fitting engagement with the hasp at one side of the slot, lai, inthe hasp, as shown in Fig. 8.

.The turn-buckle or screw, 18, engages a pair of angle-plates, 20,pivotally connected with short links, 21, which links in turn arepivotally connected with the ends of the respective cam-segments, asshown in Fim 5.

Between the respective pivotal connections of their ends with theangle-plates, 20, and the neighboring cam-segments, these links, 21, aremade of the full depth or width of the angle-plates, 20, and serve byengagement with the barrel of the drum to aid the angle-plates, 20, inresisting a tendency to a lateral movement in response to therotativemovement of the turn-buckle.

By turning the turn-buckle in the proper direction the cam-segments willbe so operated as to draw the hasps, 12, and the counter-hoop with whichthe hasps are connected inwardly to stretch the head to the desiredtension.

By turning the turn-buckle in the opposite direction the cam-pressureupon the rollers, 15, is relieved permitting the hasps and thecounter-hoop to yield and to relieve the tension on the drum-head.

By turning the heads of the buttons, 13, parallel with the slots, 14,the hasps, 12, can be swung outwardly from the drum-barrel to permitremoval of the counter-hoop, and when the counter-hoop is removed thefleshhoop, 4, and head oi the drum can be readily removed.

lhat I, claim as new and desire to secure by Letters Patent isl. In aninstrument of the class described and in combination, a barrel; acontinuous flesh-hoop encircling one end of the barrel, provided with aperipheral groove; a head stretched over said flesh-hoop and theneighboring end of the barrel; a divided clamping-ring encircling saidiiesh-lioop andseatcd in said groove with the edge-portions of said headclamped between said ring and the walls of said groove; means forcontracting said divided ring; a counter-hoop engageable with the outerside et' said liesh-hoop; and means for drawing the counter-hoopinwardly along said barrel.

2. In an instrument of the class described and in combination, a barrel;a flesh-hoo encircling one end of the barrel; a hea stretched over saidend of the barrel and connected with said flesh-hoop; a counterhoopengageable with the outer side of said iiesh-hoop; members connectedwith said counter-hoop extending inwardly' along the barrel;cam-'followers on said inwardly extending members; a pair ofcam-segments substantially encircling said barrel having meansengageable with the respective cam- Jfollowers on said inwardlyextending members; means for preventing outward movement of saidcam-segment; and means for moving said cam-segments toward each othercircumferentially of the barrel.

3. In an instrument of theclass described and in combination, a barrel;a flesh-hoop encircling one end of the barrel; a head stretched oversaid endv of the barrel and connected with said flesh-hoop; acounterhoop engageable with the outer side of said flesh-hoop; aplurality of slotted hasps hinged to said counter-hoop; flat-headedbuttons having their Shanks pivoted upon said barrel, adapted when inone rotative position to pass through the respective slots in said haspsand when turned at right angles thereto to lock the respective hasps tothe barrel; cam-followers on the inner ends of the respective hasps;cam-segments extending circumferentially part way around the barrelbetween the hasps and the barrel, and confined between the Shanks ofsaid buttons and the cam-followers on the respective hasps, and havingcam-surfaces engageable with the respective cam-followers; and means forimparting to said cam-segments a movement circumferentially of thebarrel.

4. In an instrument of the class described and in combination, a barrel;a flesh-hoop encircling one end of the barrel; a head stretched oversaid end of the barrel, and connected with said flesh-hoop; acounterhoop engageable with the outer side of said flesh-hoop; aplurality of slotted hasps hinged to said counter-hoop; flat-headedbuttons having their shanks pivoted upon said barrel, adapted when inone rotative position to pass through the respective slots in said haspsand when turned at right angles thereto to lock the respective hasps tothe barrel; cam-followers on the inner ends of the respective hasps; apair of cam-segments substantially encircling the barrel between thebarrel and said hasps and confined between the shanks of said buttonsand said cam-followers, and having cam-surfaces engageable with therespective cam-followers; and a turn-buckle for moving said cam-segmentstoward and from each other.

5. In an instrument of the class described and in combination, a barrel;a flesh-hoop; a head stretched over one end of the barrel and connectedwith said flesh-hoop; a counter-hoop engageable with the outer side ofsaid iiesh-hoop; members connected with said counter-hoop extendinginwardly along the barrel; cam-followers on the respective inwardlyextending members; a cam-segment extending circumferentially part-wayaround the barrel and confined against outward movement; and havingcam-surfaces engageable with said respective cam-followers; and meansfor imparting to said camsegment a movement circumferentially of saidbarrel.

6. In an instrument of the class described and in combination, a barrel;a flesh-hoop; a head stretched over one end of the barrel and connectedwith said iesh-hoop; a counter-hoop engageable with the outer side ofsaid iesh-lioop; members secured to said counter-hoop extending inwardlyalong said barrel; frusto-conical rollers rotatively mounted upon therespective inwardl ex tending members with their larger en s adjacent tothe barrel; a cam-segment extending circumferentially part-way aroundthe barrel, and having chamfered cam-surfaces in dove-tailed engagementwith the respective rollers; and means for imparting to said cam-segmenta movement circumferentially of the barrel.

7. In an instrument of the class described and in combination, a barrel;a continuous flesh-hoop encircling one end of the barrel, provided witha peripheral groove; a head stretched over said flesh-hoop and theneighe boring end of the barrel; a divided clamping-ring encircling saidflesh-hoop and seated in said groove with the edge-portions of said headclamped between said ring and the walls of said groove, the ends of saidring having outwardly projecting offsets; a screw-connection betweensaid offsets for contracting the ring; a counter-hoop engageable withthe outer side of said flesh-hoop and having an inwardly extendingfiange lapping said {lesh-hoop, and provided with an opening to afordaccess to said screwconnection between the offsets on the end of saidring; and means for drawing the counter-hoop inwardly along the barrel.

In testimony whereof, I have hereunto set my hand this 21st day of May,1918.

JOHN E. WINNE.

Copies of this patent may be obtained for ve cents each, by addressingthe Gommiuioner of lltentl, Washington, D. C.

